Instructions atmospheric pressure transmitter (485 type) V1.0
Context
1. Introduction ............................................................................................................................. 4
1.1 Product Overview ....................................................................................................... 4
1.2 Features ....................................................................................................................... 4
1.3 Main Specifications..................................................................................................... 4
1.4 Product Selection ........................................................................................................ 5
1.5 System frame diagram................................................................................................. 5
2. Installation instructions ......................................................................................................... 5
2.1 Equipment installation check ...................................................................................... 6
2.2 Interface Description ................................................................................................... 6
2 .3 electrical wiring.......................................................................................................... 6
2.4 Description field wiring 485 ....................................................................................... 6
3. Configure the software installation and use ...................................................................... 6
3.1 Software Selection ...................................................................................................... 6
3.2 parameter settings ....................................................................................................... 6
4. Communication Protocol ...................................................................................................... 9
4.1 The basic parameters of Communications .................................................................. 9
4.2 Frame format definition data ....................................................................................... 9
4.3 Register Address ......................................................................................................... 9
4.4 protocol examples and explanation ........................................................................... 10
5. Common Problems and Solutions ....................................................................................... 10
5.1 device can not connect to a PLC or PC ..................................................................... 10
6. Contact ................................................................................................................................ 11
7. Document History ............................................................................................................... 11
8. Size housing ........................................................................................................................ 11
Shandong RenKe Control Technology Co.,
3
www.temperaturehumiditysensor.com
Instructions atmospheric pressure transmitter (485 type) V1.0
1. Introduction
1.1 Product Overview
RS-QY-N01-2 atmospheric pressure transmitter made of imported high-precision measuring
means, high-accuracy temperature compensation device, high stability, low drift
high repeatability; easy selection of wall-mounted housing is fixed to
the wall. Need accommodation suitable temperature measuring barometric
pressure monitoring and small weather station, altimeter, agricultural greenhouses, archives and
the like.
1.2 Features
Wide DC supply voltage 10-30V
Standard ModBus-RTU protocol
Atmospheric pressure and temperature measured simultaneously
0-120Kpa wide pressure range, can be applied to various altitudes
1.3 Main Specifications
DC power supply (default)
Accuracy
10 ~ 30V DC
Air
pressure
temperature
Transmitter circuit operating
temperature
Measuring medium
Measuring range
±0.15Kpa@25
℃
75Kpa
±
0.5
℃
(25
℃)
(default)
-20
℃
~ + 60
℃,
0 % RH ~ 80% RH
air
Air
pressure
temperature
0 ~ 120Kpa
-40
℃
80
℃
(customizable)
-0.1Kpa / Year
≤
0.1
℃
/ Year
~
Long - term stability
Air
pressure
temperature
≤
1S
Response time
output signal
485 (modbus) protocol
Baud Rate: 2400, 4800 (default), 9600
Data bit length: 8
Shandong RenKe Control Technology Co.,
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www.temperaturehumiditysensor.com
Instructions atmospheric pressure transmitter (485 type) V1.0
Parity mode: none
Stop bit length: 1
The default ModBus Address: 1
Support Function code: 03
Parameter configuration
Power consumption
Software configuration
≤
0.5W
1.4 Product Selection
RS-
QY -
N01-
2-4
Ren Shuo company code
Atmospheric pressure transmitter
485 (modbus)
protocol
Probe built-in
1.5 System frame diagram
2. Installation instructions
Shandong RenKe Control Technology Co.,
5
www.temperaturehumiditysensor.com